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HomeMy WebLinkAbout20070047 Ver 1_More Info Received_20060310 (2)Method of Wetland/LTpland Estimation for Conservation Easement Areas Associated with R-2245, Second Bridge to Oak Island The following method was used to produce an estimate of wetland and upland acres within the conservation easement areas, totaling approximately 880 acres, adjacent to R- 2245, Second Bridge to Oak Island. The attached figure is a representation of the end product of this method. This figure also illustrates the conservation easement boundaries, the wildlife corridors, the wildlife pipe crossing locations, the Brunswick Electric Membership Cooperative powerline location, existing dirt road locations, and existing surveyed house lot locations. The Microstation V8 computer program is used as the graphic tool of choice, creating a workspace from a standard 2D mapping seed file with working units of 1 FT:10:100 pu, allowing precision of 0.001 feet in a design plane approximately 813 miles square. The following resources are obtained in digital format from the designated providers: NCDOT Aerial Photography, post Hurricane Isabel, 2003 NCDOT Wetland Delineation for R-2245 NCDOT LIDAR Topography- 2ft and Sft contours Brunswick County Soil Map USFWS/USGS National Wetland Inventory DCM NC Crews Wetland Areas These files are referenced into the workspace, one at a time, using the standard Microstation MDL reference file function, with the aerial photography layer as the background so as not to obscure the line files. Line weights and colors for the various files may need to be adjusted to improve appearance. The NCDOT wetland delineation for R-2245 is reviewed first for commonly occurring factors since these are known and verified jurisdictional wetland areas. Adjacent non- wetland areas, i.e. uplands, are also reviewed for commonly occurring factors. Notes are made of which factors that, in combination, typically occur in the wetland areas or in the upland areas. Factors that typically occur in wetland areas are low topographic zones and crenulations, hydric soils, wetland classifications, and natural wetland vegetated communities. Factors that typically occur in upland areas are higher topographic zones, non-hydric soils, upland classifications, and natural upland vegetated communities. Contrasts are made of the expressions of these two areas on aerial photography. Then the interior of the conservation easement is perused for similar expressions of upland areas, as described above, based on the experience and judgement of the assessor. Using the standard drawing tool in Microstation, estimated boundaries of each upland area are outlined and closed polygons are created. The acres of each polygon are then calculated using the standard Microstation measuring tool. The acres of all the polygons are then added to get the total estimated upland acres. This total is subtracted from the surveyed easement area to estimate the total acres of wetland. Reserve Development Company, LLC (RDC) The conservation easement boundaries within land owned by RDC (St. James) adjacent to the proposed roadway follow the wetland delineation lines around the East Bay area and the North Bay area, joined by a approximately 300-foot wide Wildlife Corridor. Within these easement boundaries lie several small upland patches, totaling approximately 20 acres based on the estimation method described above. The result is a total of approximately 430 acres of wetland and upland within the conservation easement boundaries on the RDC property. Williamson The conservation easement boundaries within land owned by the Williamson family follow the wetland delineation lines around the West Bay area, minus an area of upland on which a clubhouse is proposed, and the western end of the East Bay area, joined by an approximately 300-foot wide Wildlife Corridor; plus three future park areas (PR3, PR11, PR13) west of the proposed roadway. Within these easement boundaries lie several small upland patches, totaling approximately 160 acres based on the estimation method described above. The result is a total of approximately 450 acres of wetland and upland within the conservation easement boundaries on the Williamson property. 8.0 Funding. Nothing in this Agreement obligates any of the parties to pay any monies to any other party to this Agreement. In the event that a party to this Agreement enters into a contract, grant or Interagency Agreement with another party to this Agreement, the validly executed contract, grant or Interagency Agreement shall control the disbursement of any funding, the applicable scope of work and the resolution of any disputes involving the contract, grant or Interagency Agreement. 9.0 Authorities. No Provision or requirement in this Agreement shall affect or otherwise alter any of the delegated legal authorities of any of the signatory agencies. This Agreement shall be effective on the date of the last signature below. IN WITNESS WHEREOF, the Parties have each executed this Agreement, this the day of , 2006. Len Sanderson NCDOT, State Highway Administrator ~y ., f ~~ohn Sullivan, III FHWA, Division Administrator A. Stanley Meiburg USEPA, Deputy Regional Administrator I ='i~ /-~ ~ Demps y B ton NCDENR, Chief Deputy Secretary JZ.zo - D~ Date (--~z-o7 Date Date /--/~-~ Date 5 Subject: MOU on Control of Access for R-2245, 2nd Bridge to Oak Island, Brunswick Co. Date: Thu, 25 Jan 2007 08:08:50 -0500 From: Militscher.Chris@epamail.epa.gov To: jqubain@dot.state.nc.us CC: mueller.heinz@epa.gov, matthews.kathy@epa.gov, welborn.tom@epa.gov Joseph: This e-mail serves to address your request that EPA provide a written confirmation regarding the above listed subject matter. It has been confirmed that Heinz Mueller, Chief of the NEPA Program Office received the MOU originals from NCDOT on 1/24/07 and that you spoke with him regarding EPA's formal approval of the MOU. EPA will unlikely be able to get the MOU signed by 1/26/07 and that we will require several days to obtain a formal approval signature from senior management. Nonetheless, this e-mail also serves to confirm that from an EPA staff perspective, the MOU proposed fianl revisions to the access points following the last Merger meeting was acceptable. Furthermore, the recommended changes to the draft MOU from EPA's legal counsel were incorporated into the revised MOU several months earlier. In conversation with Heinz on 1/23, we fully expect that a senior manager at EPA will sign the MOU. It is important to note for the administrative record that this 'control of access' MOU is viewed by me (and others) to be a 'contingency' to address potential future breaks in access from the new facility that could potentially cause impacts to jurisdiction waters of the U.S. It is one of the key environmental commitments proposed by NCDOT and FHWA that addresses avoidance and minimization measures for indirect and cumulative impacts. Finally, it is important to acknowledge that the other three parties (FHWA, NCDOT & NCDENR) to the MOU have already signed the MOU and the only party left to formally agree is EPA. We will immediately notify the other parties and the USACE and NCDCM as soon as it becomes officially signed. Thank you. Christopher A. Militscher, REM, CHMM USEPA Raleigh Office Merger Team Representative 919-856-4206 1 of 1